Blank for side bearings for railway cars



June 25, 1929. sis. CRAWFORD BLANK FOR SIDE BEARINGS FOR RAILWAY CARS Filed Aug. 1,5, 1926 2 Sheets-Sheet 1 660:9? C'r'cu folv, z/ma KM aw June .25, 1929. I G. s. CRAWFORD B LANK FOR SIDE BEARINGS FOR RAILWAY CARS 2 Sheets-Sheet 2 Filed Aug. 16, 1926 Patented June 25, 1929.

rarest FFICE.

GEORGE S. CRAVIFORD, GE GHIGAG-G, ILLINOIS, ASSIGNOR T SOFIIIE L. WOODS, OF CHICAGQ, ILLIIFOIS.

BIiANK FOR SIDE BEARINGS FOR RAILWAY CABS.

Application filed August 16, 1826.

This invention relates to improvements in side bearings for railway cars and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

FllQ invention relates especially to the easing of the bearing. The casing is of that kind which is made from a blank stamped or cut from a sheet of metal and then bentto form.

The object of the invention is toproduce a blank for a casing of the kind having open top and bottom, with the required base flanges for its attachment to the truck or bolster to which it is applied, from a single blank. l he several advantages of my invention will appear more clearly as I proceed with my specification.

In the drawings Figure 1 is a top plan view of the novel blank from which the improved side bearing casing is made.

Figure 2 is a perspective view oi the easing as it appears when finished and ready to receive the anti-friction roller and wear plate.

Figure 3 is a perspectwe view illustrating the blank in the first stage of the bendlng process by which it is brought to form.

Figure 4c is top plan v1ew ot the side bearing with the anti-friction roller and wear plate in position therein.

Figure 5 is a side view of the bearing showh partially in longitudinal section on the plane indicated by 5-5 of Figure 4:.

Figure 6 is a view representing an end elevation of the bearing shown partly in transverse section on the plane indicated by G6 in Figure 4.

Referring now to that embodiment of the invention illustrated in the drawings wherein the bearing is shown as a truck bolster bearing, 10 indicates the novel blankfrom which the improved side bearing casing is made. Said blank is cut from a flat sheet of metal and comprises an elongated body forming strip 11, base flange strip 12 and a top flange strip 13. T he respective flange strips are defined from the body strip as indicated in Figure 1 by the lines 141 and 15.

The body strip 11 is of sutlicient length to provide two side wall parts 16, 17; an end wall part 18 between the two parts 16 and 17 an end wall part 19 beyond the side wall part 17, and an end flange extension 20.

Serial No. 129,306.

The lines defining the top and bottom flanges on the end flange part 20 are ottset respectively below and above the lines and 14: as indicated at 21 and 22 for a purpose which will. presently appear.

The base flange part 12 in the neighborhood of the one side wall part 16 has an apertured extension 1.2 and the other side wall part 17 has two diverging apertured extensions 12 and 12 to receive the bolts or rivets by means ot' which the casing is to be attached to the bolster to which it is applied.

After the blank is stamped or cut to the form shown in Figure 1, the base flange 1.2 and the top flange 13 are bent at right angles to the main part 11 of the blank 10 along the lines 14-22 and 15-21, as shown in Fig. 3. The blank as a whole is then bent along the transverse lines 22 22*, defining the several side and end walls and the (3221161181011 20, to bring it into the form of an elongated rectangular shell open top and bottom as indicated in Fig. 2. In bringing the blank into this form one end of the top flange 18 (that is to say, the part of said flange adjacent the extension 20) is engaged under the opposite end of said flange and the corresponding end of the base flange 12 is engaged upon the top of the opposite end of said flange as shown in Figure 2, this being made possible by the offsets hereinbetore described and defined by the lines 21 and 22. After the blank is bent into the form described the overlapping ends and flanges are riveted or in other suitable manner secured together as shown in Figure 2.

Preferably two laterally spaced cuts 23, 23, running transversely of the blank, and a longitudinal cut 23 along the line 14 connecting the first two named cuts, are made in the end wall parts 18, 19 of the blank (preliminary to the above bending process) adjacent the base flange. This provides parts or tongues 24, 24:. When the flanges 18 and 12 are bent, as shown in Figure 3, the parts 24 of thesaid end walls are deformed or bent back leaving openings above the cuts 28, 23 as shown in Figure 3. lVhen the casing is finished the parts 2 1 between the lines 23 of said end walls provide an end thrust wall part conforming to the curvature .01 the anti-friction roller to be used in the casing (see Figure The casing is provided in the usual manner with any familiar filler block 25 and Wear plate 26 upon which is mounted an anti frietion roller 27 as shown in Figures 4-, and (5. These may be locked in the casing in any form or usual manner.

I claim as my invention:

1. A sheet metal blank for a side bearing casing, said blank being elongated and con.- sisting of a main part comprising side Wall parts, an intermediate end Wall part, a sec- ,ond end Wall part beyond one of said side Wall. parts, with an extension of said second named end wall part, and of a base flange part and of a top flange part, said blank being adapted to be bent into the form of an elongated casing, with said extension of said second end Wall overlapped upon a side wall end part and with the ends of the flanges at one end of the blank overlapped by and engaged against the flanges at the other end of said blank.

2. A sheet metal blank for a side bearing easing, said blank being elongated and consisting of a main part comprising side Wall parts an intermediate end Wall part, a second end wall part beyond one of said side Wall parts, with an extension of said second named end Wall part, and of a base flange part and of a top flange part, said end Wall parts having laterally spaced slits running transversely of the blank With slits running longitudinally of the blank connecting said first named slits to define bendable tongues, said blank being adapted to be bent into the form of an elongated easing, with said extension of said second end Wall overlapped upon a side Wall end part and With the ends of the flanges at one end of the blank overlapped by and engaged against the flanges at the other end of said blank.

In testimony that I claim the foregoing as my invention, I affix my signature this 14th day of August, A. D. 1926.

GEORGE S. CRAWFORD. 

